Nasdaq's 23-hour trading system has been approved by the SEC and will be officially launched on December 6

According to Nasdaq's financial report for the first quarter of 2026 and 8-K documents submitted to the SEC, its 23-hour trading system (23/5) has been approved by the US Securities and Exchange Commission (SEC) and will be officially launched on December 6, 2026.

At that time, the US stock market will only be closed for 1 hour every day (20:00-21:00 EST) for system clearing and data processing, and the remaining 23 hours will be open for continuous trading.